- August 24, 2016 at 3:06 pm #16650
I milled my first aluminum today, and while it went very well, there is one oddity that I”m trying to figure out.
Attached is a picture of my first test piece, and there’s some horizontal striations that always occur at the same Y-Axis locations across all 3 squares.
Any ideas as to what causes this? Maybe at those points there’s more friction or something on the rails?
Attachments:August 24, 2016 at 5:01 pm #16656
Could be rough spots on your rails.August 24, 2016 at 7:16 pm #16661
Do the belts for that axis seems any tighter or looser than the other axis?
Could also be chatter, looks like a single pass cut (the toughest), if you get into wider cuts when it is only cutter with half the bit that will probably go away. Like it you cut a solid square the first cut is tough all the rest are must smoother, faster.August 25, 2016 at 2:51 am #16675
All 4 belts seem to be pretty similar in tension.
That was 5 or 6 passes at 0.3mm DOC at 5mm/s.
I’m not overly concerned about it.. my current aluminum milling needs are all through holes/paths, so I won’t even notice it on the finished product. But, if I can fix it, all the better.
It probably is rough spots on the rails.. I might take some high grit sandpaper over them and see if it makes any difference.
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